I'm not saying no managerial mistakes were made, but at some point it, regardless of the lineup, the rotation, the usage of the bullpen, the bench or ANYTHING that the manager has control over...regardless of ALL of that...it still comes down to the players who have to actually play the game. A manager could do everything 100% exactly right, but if his players don't perform, you simply are not going to win the game.
The inverse isn't true though. You don't HAVE to have the best manager in baseball to win. Joe Girardi is one of the worst managers I've ever seen, but who can't win with the Yankees on the field?